Escape for derricks



Jan. 26 1926.

WH @Mga Jan. 26 1926.

' v L. G. RAMBIN El AL ESCAPE FOR DERRICKS Filed Sept. 30, 1925 2 Sheets-Sheet 2 w TN Ess Patented Jan. ze, 1926.`

UNITED STATES 1,571,096 VPATENT OFFICE.

LOUIS GARLAND RAMBIN AND WILLIAM ALFRED RAMBIN, OF SMACKOVER, ARKAN- SAS; SAID WILLIAM A. RAMBIN ASSIGNOR 0F ONE-HALF OF HIS RIGHT TO'SAID LOUIS GARLAND RAMBIN.

ESCAPE FOR DERRICKS.

Application led September 30, 1925. Serial No. 59,739.

To all whom t may concern:

Be it known that we, Louis GARLAND RAM- Iniand WILLIAM ALFRED RA 1\1.nIN,are citizens of the United States. residing at Smackover, `in the county of Union and State of Arkansas, have invented new and useful Improvements in `Escapes for Derricks, of which the following is a specification.

This invention. relates to improvements in escapes for use upon oil well derricks and the like and which contemplates the provision of a trolley cage normally arranged -adjacent the platform upon the derrick whereby the workmen when in imminent dangerof being burned when the oil well catches fire may readily and easily jump into the escape and coast downwardly toward the ground in safety. A

Another object of our invention is the provision of a trolley weight traveling upon "a separatecable but having communication with the escape carriage or cage whereby the escape cage may benormally positioned within convenient reach of the workmen upon the platform on the derrick.

With the above and other objects in view, the invention further includes the following novel features and details. of construction, to be hereinafter more fully described, illustrated in the. accompanying drawings and pointed out in the appended claims.

In the drawings p.

Figure 1 is a fragmentary side elevation of a derrick and illustrating the manner in which my present invention isapplied and used in conjunction therewith.

Figure 2 is an enlarged sectional'viewiof our invention per se when in'useand operation.

Figure 3 is a sectional view taken on line 3-3 of Figure 2.

Figure 4 is a similar view'taken on line 44 of Figure 2.

`Figure 5 is a top plan view of one of the pulleys arranged upon and used in conjunction with the escape carriage or cage.

Referring to the drawings in detail, wherein like characters of reference denote corresponding parts, the reference character 10 indicates a derrick as commonly used in oil fields, and having a platform 11 arranged at an appropriate point in its height and upon which repairmen and workmen opcrate in the repairing of the derrick; all of the above being of the usual and well known construction and forming no part of the present application for Letters Patent but being merely shown for purposes of illustration in bringing forward the novel advantages of the above entitled invention.

The invention resides in the provision of stakes or posts as indicated at 12, driven into the ground or embedded or anchored in any su1table manner at an appropriate dis` tance from the derrick 10 and which have cables 13 and 14 secured thereto and in turn the cables have their opposite ends secured in super-imposed `relation upon the corresponding side of the derrick 10 and at spaced intervals thereon, the purpose of which will be presently apparent.

Mounted for sliding movement upon the cable 14 is a carriage escape contemplating the provision of a relatively flat elongated.

plate 15 having spaced parallel apertured Mounted in a similar manner but upon an intermediate portion in the length of the plate 15 are rectangularly shaped companion plates 18 having rollers 19 rotatably mounted between the `corresponding inner sides thereof and engaging the under side ofthe cable 14 while a brake roller 2O having its pivot bolt 21 journaled withinl arcuate slots 22 provided in the corresponding i and opposite sides of the plates 18 is also connected to brake arms 23 havingtheirrespective upper free end'portions pivotally secured as at 24 to the plates 18 while the remaining length ofthe brake arms23 eX- tend downwardly upon the outer sides of the plates 18 and are then inwardly offset in forming a handle or gripping portion 25 whereby the brake arms 23- are capable of rocking movement upon the outer sides of the plates7 18 in selectively7 engaging the brake roller 20 operated thereby into engagement with the cable 14 in checking the acceleration of the carriage or cage escape 15.

Suspended from a link 26 extendlng through the lower portion of the plates 18 75 plates 16 secured to the opposite sides adjasupplies and workmen may be placed or arranged and in the latter case workmen and repairmen in escaping from'the derrick'10 incase of the latter catching fire.

ln order to provide means for normally arranging the cage or-bucket 27 inthe posi-tion, as clearly illustrated in Figure 1 of the drawing, in convenient reach of workmen and repairmen upon the platform 11 arranged at an appropriate point in the height of the derrick 10, we provide a weight 28 being suilicient in avoirdupois to overweight the bucket 27 and mountings therefor, and having pulleys 29 carried thereby for sliding movement upon the cable 13 and having communication with one pair of the plates 16 through the instrumentality, of an auxiliary cable 80 having a cable connection 31 arranged upon itsjopposite end and receiving a bolt 32 therethrough in communicating the connection 31 with the rear pair of the plates 16.

'It will thus be noted from the foregoing description and accompanying drawings that the bucket 27 will bev normally positioned adjacent the` platform 11 uponpthe kderrick 10 by the weight 28 and when aV workman or repair/man jumps into the bucket 27, in case the derrick I() catches lire, he will immediately` grasp the handle or hand gripping portion 25 formed upon the lower free ends of the brake arms 23 in moving the bolt 21 downwardly within the arcuate shaped openings 22 arranged in the plates 18 whereby the brake roller 20 will be brought into engagement with the cable 14 in creating a slight bend in the cable 14 against the rollers 19 whereby the accelera-y tion and speed of the bucket 27 will be checked and cause no injuryof the occupant of the bucket 27 in landing safely.

The invention i,is susceptible of various changes in its form, proportions and minor `details of construction, andthe right is herein reserved to make such changes as properly fall within the" scope of the appended claims;- v

Having described our invention what is claimed 1s:

1. An escape for derricks comprising a` plurality of cables arranged in superimposed relation and at spaced intervals along the height of the derrick, a lbucket carriage comprising an elongated plate having spaced parallel apertured companion plates arranged upon the opposite ends thereof, grooved pulleys arranged between the apertured ends of the companion plates and mounted for movement upon one of the cables, a brake mounted upon the bucket carriage, a bucket suspended from the`d bucket carriage, a weight carriage correspondingly mounted upon another of the cables, and an auxiliary cable communicating the bucket carriage with the weight carriage in normally positioning the bucket carriage.

2. An escape for use upon derricks having a plurality of cables arranged in superimposed relation and at spaced intervals along the height ofthe derrick and having their respective ends extending downwardly therefrom, a bucket carriage comprising an elongated plate having pairs of spaced parallel apertured plates arranged upon the opposite ends of the elongated plate, glooved pulleys arranged within the aperturcd pormovement within the upper portion of the.

intermediate plates, a brake arm having i communication with the brake roller, a

bucket suspended lintermediate the length of the elongated plate, a weight carriage correspondingly mounted upon another of the cablesand an auxiliary cable establishing communication between the weight carriage andthe bucket carriage.

3. An escapefor use upon derricks comprising a plurality of cables communicating at appropriate points and in spaced parallel relation and arranged in superimposed order upon4 the derrick and having their respective ends extending downwardly therefrom and anchored, a bucket carriage comprising an elongated plate having spaced parallel apertured opposite ends, grooved ulleys journaled plates arranged upon its` within the apertured portions o/f the plates respectively and mounted upon one of the cables for movement thereon, rectangularly shaped plates correspondingly mounted intermediate the length of the elongated plate and having rollers journaled between the corresponding inner sides thereof for guiding the last mentioned cable therebetween, a brake ,roller arrangedl between the inner sides of the reetan larly shaped plates and having its respective trunnions extending within rearwardly disposed arcuate shaped slots provided in the corresponding and opposite sides of the plates, brake arms pivotally mounted u on the opposite sidesof the rectangularly s aped plates and receiving the brake roller trunnions therein, a bucket suspended intermediate the length and immediately beneath the elongated plate, and a weight carriage correspondingly mounted upon another of the cables and having communication with the bucket carriage.

t In testimony whereof we aiix our signaures. 

